Fluid-regulating valve



E. FENEHTHY FLUID REGULATING VALVE Filed Jan. 1924 Q wn@ 4@ K aINVENTOR.

/ A TTORNEY.

Patented 9, i926.

i ERNEST PENBERTHY, 0F BETROT, NICHGAN, ASSIGNOR TO' CHCAGO .PNEUMATCTOOL COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

ELUD-REGULATING VALVE.

Application filed January 28, 1924. Serial No. 689,083.v

To all who/n t may conce/rn.:

Be it known that l, Furnier Pnivnnnrr-rv, a citizen of the United Statesof America, and resident of Detroit? in the county of lVayne and Stateof Michigan, have invented new and uselul lmprovements inFluidlleg'ulatin Valvesy ot which the followingl lis a speci l rlhisinvention relates to duid regulating valves particularly adapted andintended for use on tluid pressure percussive tools, such pneumatic rochdrills, to cut-oli or choke the exhaust so as to direct the pressurefluid through the hollow drill steel to clear away the cuttings, but itis to be understood that the invention is not limited to such use but isadapted in the form illustrated for use wherever such a valve is neededor desired7 and the inventive idea is further capable of modii'icationand adaptation to many other tools, machines and uses.

Among` the objects of the invention are to provide a valve of the typedescribed characterized by simplicity, few parts, 'rugged construction,which does not become worn and leaky in service, which is automaticallyretained in adjusted position, and whichis not unduly expensive tomanufacture and assemble.

ln order to illustrate the invention, a preerredl embodiment thereoie isshown in the accompanying drawings in which:

Fig. 1 shows the improved valve in perpective as mounted for use on aroel: drill, the latter being shown largely in vertical longitudinalsection.;

Fig'. 2 a sectional view ot the valve7 substantially on the line 2 2 ofFig. 1;

Fig. 3 is view similar to Fig. Qshowing; the operatingl hand-le in adifferent position .and looking;- in the opposite direction as ou theline 3-2= ol Fig. /l-g Fig. fl a sectional vien' on the line -l il.indicating; in full lines theclosed position oil the valve and in dotand dash line the open position ot the valve;

Figs. 5 and 6 are detail views showing respectively the operating`handle in plan and the valve cylinder proper in side elevation.

The embodiment of the invention shown for the purpose ot illustration isone form of the fluid regulating,` valve particularly adapted for use asan exhaust choker valve on a pneumatic percussive tool such as the rockdrill illustrated in Fig. 1. The valve comprises a hollow fitting' 7having a stem S provided with screw threads 9 or other suitableattaching means, and a portion 1() forming' a valve casing; throughwhich eX- tends a bore 11 in which is seated the cylindrical valveproper 1.2 arranged to be actuated by a handle 13; the handleadditionallyv serves to retain the valve 12 within its bore and. inadjusted position as will later appear. rlhe bore 11 has any desirednumber ot ports to be controlled by the valve 12. ln the presentinstance there are two ports, the one 1-/lcorresponding to the passagethrough stein S and the other port 15 extending through casing 10 andopening into the atmosphere. llo interconnect these ports7 the valve 1Q,is suitably recessed or out away at 16, the uncut away portion servingto close port 1d in one position of the valve (see Figi: l).

Handle 13 is preferably ozt still wire coiled at its central portionl toprovide the grip portion 1.7 and to place under tension the inwardlyconvergingarms 18 thereof which terminate in inwardly offset'substantially parallel ends 19. Ends 1.9 serve as the opera-tiveconnection between the handle and cylindrical valve 12, being receivedin transverse grooves 2O in the opposite ends of the valve. lt will thusbe evident that the handle 13 straddles the casing portion of littingg`7 and holds the valve 12 within its bore. Grooves 2.0Y are of sutlicientdepth to permit the offset ends 19 to project within the bore 11` soth:r t t ie shoulders 2l formed by the oil'lsetting ot these ends engagewit-hin the bore to prevent the accidental removal of the hand-le (seeFig'. By this construction, the arms 18 of handles 13 adjacent the ends1 9, rictionalfly engage casing- 10 or the httingr, so that theresiliency of the handle serves to retain the valve in adjustedposition. rllo limit the throw oil the valve, stop shoulders 22 .may beprovided on the casing in any desired manner as by cutting,v away aportion of the latter7 the handle arnis 18 then trictionally the facesot thecut away portions. lith the described construction and with astilil spring handle, the pressure of the arms 1.8 ot the latter uponlthe sides of the casing 10 is amply sui'licient to hold the valve 12 inadjusted position in spite of the vibration of thek tool to which thevalve may be secured. Asan added measure of precaution, however, thecasing l0 may be notched as indicated at 2li (Fig. l) to form a positivestop for the handle in both open and closed position of the valve.

Fig. l illustrates a typical installation of the valve for use as achoker, wherein stem 8 of the tting has been threaded into a boss a uponthe cylinder A of a rock drill of the percussive type, the bore of theboss a connecting with the exhaust groove ct in the piston chamber. Thestem of the valve may have a lock nut 23 thereon to prevent the valveassembly from working loose in its connection with. boss a. As shown,the handle 13 of the valve is in position to conneet the ports 14 and l5of the valve. This is the normal position with the drill exhaustingdirectly to atmosphere. `When it is desired to send a strong blast ofair through the drill steel to blow out the cuttings, the handle 123 isswung up to its upper or valve closing position whereupon the fluidpressure in the back of the piston chamber, being unable to escape toatmosphere, holds piston B in its lower position and passing along thegrooves of the rifle bar (l gains access to the water tube opening andthence passes down into the bore of the drill steel.

From the. above it will be apparent that the improved vtype of valveherein described y reason of its simplicity and rugged construction isjarticularly adapted yfor use Wherever it is in an exposed position andsubjected to rough treatment as upon rock drills, that the valve memberitself being cylindrical or of the Corliss type has ample bearingsurfaces insuringI long wear without leakage, and that the spring handlestraddling the valve casing and comprising in the one element the meansfor retaining the valve cylinder in place and for holding thel same inadjustment by constant pressure of its arms against the casingcontributes largely to the simplicity and reliability of the device.

Having now described my invention, what I claim and desire to secure byLetters Patent is:

1. A. fluid regulating valve comprising a casing having a boretherethrough and ports opening into said bore, a valve within said borearranged to control said ports, a-n operating handle loosely engagingthe ends of `said valve and making frictional contact with said casingto hold the valve in adjusted position, and means on said handleprojecting within the bore oit' said casing for maintaining said handleagainst accidental removal.

2. A fluid regulating valve comprising a fitting having a bore and portsopening into said bore, a cylindrical. valve oit uniform diameter seatedin said. bore and, controlling and a spring retainer having offsetsubstan tially parallel ends straddling said fitting and projecting`within said bore, said ends being loosely received in grooves in theends of said valve whereby said retainer serves as a handle. foractuating said valve, said offset ends forming stop shoulders to preventaccidcntal removal of. said retainer.

il. A fluid regulating valve comprising a tittinghaving a bore and portsopening into said bore, a cylindrical valve in said bore, and a springretainer having offset substantially parallel ends straddling saidfitting and projecting within said bore, said ends being looselyreceived in grooves in the'ends of said valve whereby said retainerservesvas a handle for actuating said valve, the grooves in said valvebeing of a depth to permit the parts of the retainer adjacent aid endsto frictionally engage said fitting whereby the resiliency of theretainer serves to hold the valve inadjusted position.

5. A fluid regulating valve comprising a fitting having a boreand portsopening into said bore, a cylindrical valve in said bore, and a retainerfor said valve of wire coiled at its central portion to form a handle orgrip part, and hafving resilient inwardly offset parallel endsstraddling the fitting and projecting" within said bore, said valvehaving transverse recesses in its ends in which the ends of saidretainer are loosely received, the parts of said retainer adjacent saidends bearing against said fitting yieldingly to hold the valve inadjusted position.

(3. A fluid regulating valve consisting of but three parts,- a fittinghaving a bore thercthrough and ports opening into said bore, a valve insaid bore for controlling said ports, and a combinedr actuating handleand retainer operatively engaging said valve and h aving partsfrictionally engagingopposite sioes of said fitting adjacent said valveyielding to hold the valve inadjusted position and having other partsproj ectingwithin the opposite ends ot said bore to hold the handleagainst accidental. separation for said fitting and said valve.

Signed by me at Detroit this 24th day of January 1924.

